Introduce werf-giterminism.yaml config

Implement fine-grained giterminism config (part 1), werf-giterminism.yaml:

giterminismConfigVersion: 1
config:
  stapel:
    mount:
      allowBuildDir:
      allowFromPaths:
        - PATH1
        - PATH2
  goTemplateRendering:
    allowEnvVariables:
      - VARIABLE_X
      - VARIABLE_Y
      - /CI_*/
  dockerfile:
    allowContextAddFile:
      - aaa
      - bbb
    allowUncommitted:
      - **/*
      - myapp/Dockerfile
    allowUncommittedDockerignoreFiles:
      - **/*
      - myapp/.dockerignore

WERF_LOOSE_GITERMINISM=1 still working but will be removed soon.

Fixes

Fix werf-helm-template and werf-helm-lint commands try to load kube config; fix werf-render command excess options.

Installation

Linux amd64

Darwin amd64

Windows amd64